So far the only,one echoing God given common sense is Trump.
And for my tastes he has not gone far enough.
Ban them. Start rekoving them back to muslim countries.
Never let in any again.
Better vetting of visitors will have to take place, at least from countries that are known to be heavily Islamic. I doubt they could come up with a foolproof screen, because as one imam commented, they could always say they’re Christian.